Head Gaskets

2010-2018 Dodge Ram 2500 & 3500 6.7L Cummins Multi-Layer Steel (MLS) & Performance Head Gaskets

Lock in extreme cylinder pressures, prevent cooling system over-pressurization, and eliminate combustion leaks at the block-to-head mating surface with premium 2010–2018 6.7L Cummins 4th Gen head gaskets from Full Force Diesel. The head gasket on a 4th Generation Ram HD truck is the ultimate frontline boundary separating thousands of pounds of explosive combustion energy from your engine's oil passages and coolant jackets. When scaling up performance with electronic tuners, aggressive common-rail fueling, and upgraded turbochargers, the factory sealing parameters undergo immense stress. Upgrading to an engineered, high-fatigue aftermarket head gasket provides the structural resilience required to keep your inline-six completely sealed under heavy loads.

Advanced Multi-Layer Steel (MLS) Architecture & Coating Technology

Modern performance replacement head gaskets rely on highly sophisticated structural layers to manage continuous thermal expansion and high drive pressures:

• Spring Steel Core Layering: Premium aftermarket head gaskets utilize Multi-Layer Steel (MLS) engineering, consisting of multiple sheets of high-tensile spring steel laminated together. The outer sheets feature precision-embossed sealing beads that act as concentrated spring loads against the cylinder head and engine block decks. This design allows the gasket to maintain an active, kinetic seal even if the cylinder head experiences microscopic lifting or flexing under heavy fifth-wheel towing conditions.

• Advanced Fluoroelastomer (FKM) Surface Coatings: To guarantee a fluid-tight seal against oil and coolant, the individual steel layers are micro-coated with specialized high-temperature rubber compounds or advanced fluoroelastomer surface treatments. These coatings flow into microscopic surface imperfections on the machined block and head decks, completely eliminating cold-coolant weeping and external oil tracking.

Managing Machining Tolerances: Selective Thicknesses and Severe-Duty Options

Executing a proper top-end rebuild or head gasket refresh on a 6.7L common-rail engine requires precise measurement of piston-to-valve clearances and deck geometry:

• Standard vs. Over-Thickness Gaskets: When a cylinder head or engine block deck is resurfaced at the machine shop to correct warping or thermal distortion, material is removed from the structural deck face. This brings the valves closer to the pistons, reducing vital clearance. To compensate for this change, we stock head gaskets in selective thicknesses—including standard factory dimensions as well as common over-thickness variations (such as plus 0.010-inch or plus 0.020-inch)—allowing you to restore correct valvetrain geometry and compression ratios.

• Fire-Ringed and O-Ringed Compatibility: For high-horsepower street setups and competition builds pushing past 45 to 50 PSI of boost pressure, standard combustion seals can meet their structural limit. We carry specialized performance head gaskets engineered specifically to pair with O-ringed or fire-ringed cylinder heads. These gaskets accommodate heavy-duty wire inserts machined into the deck, concentrating immense mechanical force directly around the cylinder bore to build an unyielding combustion barrier.

At Full Force Diesel, we provide the machine-shop-certified engine components and heavy-duty sealing hardware your 4th Gen inline-six needs to remain completely dependable. Explore our complete selection of 2010–2018 6.7L Cummins 4th Gen head gaskets, premium MLS replacement packs, selective-thickness options, and heavy-duty head stud fastening networks above to secure your truck's top end today.